Clamp and spacer for concrete forms



N0V.`26',V1946. vE CRNELLA 2,411,678

CLAMPY AND SPACER FQR CONCRETE FORMS Filed April 15, 1945 VMM .avm

1N VENTOR.

ATTDRN EYS Patented Nov. 26, 1946 UNITED STATES PATENT OFFICE CLAMP AND SPACER FOR CONCRETE FORMS Emanuel Cornella, West Chicago, Ill.

Application April 13, 1945, Serial No. 588,162

2 Claims. 1

The invention relates to a, releasable clamp and spacer device, and more especially to a clamp and spacer for knockdown concrete forms or falsework.

The primary object of the invention is the provision of a device of this character, wherein knockdown false-Work or forms for concrete construction work can be releasably clamped together and spaced properly for receiving the concrete in the erection of the construction work, the device being of novel and unique construction, it being easily iitted in place and removed, with dispatch without requiring skilled labor.

Another object of the invention is the provision of a device of this character, wherein it is devoid of a complicated assembly, and possesses few parts, which are adapted for inter-fitting with each other, holding the forms firm and secure to the construction work.

A furtherobject of the invention is Vthe provision of a device of this character, which is simple in construction, thoroughly reliable and eflicient in operation, strong, durable, it being re- -useable infinitely, enabling the forms to be knocked down and set up with dispatch and ease, and inexpensive to manufacture and install.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter morefully described, illustrated in the accompanying drawing, which shows the preferred form of embodiment of the invention, and pointed out in the claims hereunto appended.

In the accompanying drawing:

Figure 1 is a, fragmentary sectional View through a knock-down assembly of concrete forms, showing the device constructed in accordance with the invention applied.

Figure 2 is a fragmentary elevation of the device looking toward the same at substantially right angles to that position shown in Figure 1.

Figure 3 is an end view of the spacer member of the device.

Similar reference characters 'indicate corresponding vparts throughout the severa1 views in the drawing.

Referring to the ydrawing in detail, A desig-` nates generally opposed portions of a knockdown concrete form or false-work, for erecting a concrete wall or the like, and each involves as usual the tongue and grooved interlocking facing boards I0, which are of the required thickness, widthand length according to the necessary work requirements, while at the outer sides of these boards I are crossing strips or rails II, which make contact therewith.

The device constituting the present invention, there being employed anyrequired or selected 2 number thereof, comprises a tubiform spacer member I2, preferably made from a, single sheet of stiff material, such as metal, which is rolled on itself into tube form, of any required length, as best seen in Figure 1 of the drawing, This member I2 is adapted to be disposed between the opposed portions A of the form, so that its ends telescopically wedge onto conica1 shaped center knobs I3 of abutment washers or disks I4 having bearing against the portions A and loosely fitted about the shank I5 of a hook headed clamp following the character of a bolt, the hook head being denoted at I6. This shank I5 of the clamp or bolt 'at the end portion remote from the head I6 has removably tapped thereon a binding nut I 1, which is adapted to play against a washer I8 on the said clamp or bolt and rests against one of the strips or rails II next thereto, the shank I5 being passed through suitable clearances, these being denoted generally at I9, as provided in the form portions A and the rails II aligning with the clamp or bolt when the forms are set up in assembled relation for concrete construction work, The head I6 of the bolt or clamp is hooklocked with the rail II next thereto, so that the shank I5 will not turn when the nut is tightened or slackened thereon in the application and removal of the device.

The device when applied to the false-work or forms will iirmly and securely hold them in place and the opposed sections thereof in their proper spaced relation to each other for the pouring of the concrete wall formation, and such device can be readily removed for the knocking down of the false-work or forms from set up condition.

What is claimed is:

1. A device of the kind described, comprising a substantially tubiform spacer member made from a single sheet of metal and rolled on itself into tube form, abutment washers at the ends of the member and having conica1 center knobs intertting the ends of said member, `and a work clamp removably passed through the washers and member and clamping these in spacing relation to the work. f

2. A device of the kind described, comprising a. substantially tubiform spacer member made from a single sheet of metal and rolled on itself into tube form, abutment washers at the ends of the member and having conical center knobs intertting the ends of said member, a work clamp removably passed through the washers and member and clamping these in spacing relation to the work, a working engaging hook on one end of the clamp, and an adjusting nut carried at the other end of said clamp.

EMANUEL CORNELLA. 

